applyDeltaToSource
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applyDeltaToSource(
source,delta):PrefabData
Defined in: prefab/sceneInstance.ts:340
Bake a complete instance delta into a prefab’s source — the STRUCTURAL
“Apply to Prefab”. applyOverridesToSource only folds property/component/
name/visibility/metadata edits; this also inserts added entities (linked
under their parent) and deletes removed subtree roots and their descendants
(never the prefab root), so an instance’s structural changes truly enter the
asset. Pure: source is not mutated. Nested-scoped ids (composed slot/…
addresses) that don’t exist on this source are skipped — structural apply
targets the top-level asset.